A spindle is fixed at one end to the midpoint of a lever with length $1.20\,\text{m}$ and at the other end to the midpoint of a disc with radius $0.20\,\text{m}$. A string is wound around the disc, goes over a pulley and is connected to a $900\,\text{N}$ weight. What is the smallest force $F$, applied at each end of the lever, that could raise the weight?
- A$75\,\text{N}$
- B$150\,\text{N}$
- C$300\,\text{N}$
- D$950\,\text{N}$